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Finding the Fourth Proportional to 108,820.64, 150,051.20 and 70,529.78

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Solution

The fourth proportional to 108,820.64, 150,051.20 and 70,529.78 is: 97,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,820.64 : 150,051.20 = 70,529.78 : x
  2. Step 2: Convert to fraction form
    108,820.64/150,051.20 = 70,529.78/x
  3. Step 3: Cross multiply
    108,820.64x = 150,051.20 × 70,529.78
  4. Step 4: Simplify right side
    108,820.64x = 10,583,078,124.74
  5. Step 5: Solve for x
    x = 10,583,078,124.74/108,820.64
  6. Step 6: Final answer
    x = 97,252.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.